Upgrade Etherpad (v1.9.3-0 -> v1.9.3-1)

requirements.yml

@@ -16,7 +16,7 @@
   version: 129c8590e106b83e6f4c259649a613c6279e937a
   name: docker_sdk_for_python
 - src: git+https://gitlab.com/etke.cc/roles/etherpad.git
-  version: v1.9.3-0
+  version: v1.9.3-1
   name: etherpad
 - src: git+https://gitlab.com/etke.cc/roles/grafana.git
   version: v10.2.2-1